package com.oocl.admin_platform.filter;

import java.io.IOException;

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import org.apache.log4j.Logger;

import com.oocl.admin_platform.pojo.Manager;

/**
 * Servlet Filter implementation class LoginFilter
 */
public class LoginFilter implements Filter {

	private static Logger logger=Logger.getLogger(LoginFilter.class);
    /**
     * Default constructor. 
     */
    public LoginFilter() {
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see Filter#destroy()
	 */
	public void destroy() {
		// TODO Auto-generated method stub
	}

	/**
	 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
	 */
	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
		HttpServletRequest req = (HttpServletRequest) request;
		HttpServletResponse resp = (HttpServletResponse) response;
		String path = req.getServletContext().getContextPath();
		HttpSession session = req.getSession();
		Manager manager  = (Manager) session.getAttribute("manager");
		if(manager != null){
		 chain.doFilter(request, response);

		}else{
			logger.info("have one enter the system without login");
			resp.sendRedirect(path + "/login.jsp");
		}
	}

	/**
	 * @see Filter#init(FilterConfig)
	 */
	public void init(FilterConfig fConfig) throws ServletException {
		// TODO Auto-generated method stub
	}

}
